31. The room is in a terrible mess; it _______ cleaned.A.can’t have beenB.should

31. The room is in a terrible mess; it _______ cleaned.A.can’t have beenB.should

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31. The room is in a terrible mess; it _______ cleaned.
A.can’t have beenB.shouldn’t have been
C.mustn’t have beenD.wouldn’t have been

答案
A
解析

举一反三
Naturally, after I tell my brother what to do, he ____ go and do the opposite.
A.willB.mayC.canD.must

题型:不详难度:| 查看答案

16.You can"t imagine that a well-behaved gentleman__________be so rude to a lady.
A.mightB.needC.shouldD.Would

题型:不详难度:| 查看答案

22.Despite the fact that Betty is a lovely girl, she____be extremely difficult to work with sometimes.
A.mustB.shouldC.wouldD.Can

题型:不详难度:| 查看答案

12.  To my surprise, some of my students_____ stay up to study for the coming examination
A.mayB.mustC.canD.Should

题型:不详难度:| 查看答案
“Dear, if you listen to me, you ______ have some candies as a reward,” the woman told her little son.
A.shallB.doC.shouldD.must

题型:不详难度:| 查看答案
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